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The red wiggler earthworm, Eisenia fetida (Sav.), is a model species for research on the harmfulness of various chemicals for saprophagous invertebrates, on account of its rapid reproduction rate in comparison to other wild-living species and the most uniform genetic background. They are used in a variety of toxicological tests, legally normalised by EU Directives and the OECD. Earthworms have become...
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